31 C.F.R. § 587.302

Effective date.

(a) The term effective date refers to the effective date of the applicable prohibitions and directives contained in this part, and, with respect to a person whose property and interests in property are blocked pursuant to § 587.201, the earlier of the date of actual or constructive notice that such person's property and interests in property are blocked.

(b) For the purposes of this section, c onstructive notice is the date that a notice of the blocking of the relevant person's property and interests in property is published in the Federal Register .